Weather-resistant and anti-interference high-voltage cable

Abstract

The utility model discloses a kind of weather-resistant anti-interference high-voltage cables, including conductor, insulating layer, shielding layer and outer sheath sequentially arranged from inside to outside, insulating layer includes modified polymer layer and silica layer, silica layer includes multiple nanometer silicon dioxide particles uniformly distributed, silica layer is embedded in modified polymer layer, for improving temperature-resistant insulation performance, to improve the temperature-resistant performance and insulation performance of high-voltage cable.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a weather-resistant and interference-resistant high-voltage cable. Background Technology

[0002] With the rapid development of the new energy vehicle industry, its power system, battery system, and electronic control system have placed more stringent requirements on the performance of high-voltage cables. These cables need to operate stably for a long time in environments with high temperature, low temperature, strong vibration, and complex electromagnetic interference, and are one of the important components to ensure the electrical safety of the entire vehicle.

[0003] However, in practical applications, traditional high-voltage cables mostly use ordinary cross-linked polyethylene (XLPE) as insulation material. The long-term temperature resistance of this material is generally 90℃, and the short-term maximum temperature resistance does not exceed 130℃. When the cable is laid near high heat sources such as motors or power control units, the local temperature can reach over 150℃. After exceeding the stable operating range of the material, the insulation layer is prone to thermal aging, cracking, carbonization, and other phenomena, resulting in a decrease in insulation breakdown strength, which in turn leads to safety hazards such as leakage, short circuits, and even fire.

[0004] Therefore, how to improve the temperature resistance and insulation performance of high-voltage cables, and enhance their stability and reliability, has become an urgent technical problem to be solved in the current high-voltage cable field. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a weather-resistant and interference-resistant high-voltage cable to solve the technical problem that high-voltage cables in the prior art generally have insufficient temperature resistance and high risk of insulation failure.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model provides a weather-resistant and interference-resistant high-voltage cable, comprising: a conductor, an insulation layer, a shielding layer, and an outer sheath arranged sequentially from the inside to the outside. The insulation layer includes a modified polymer layer and a silicon dioxide layer. The silicon dioxide layer includes a plurality of uniformly distributed nano-silica particles. The silicon dioxide layer is embedded in the modified polymer layer to improve the temperature resistance and insulation performance.

[0007] In some embodiments, the particle size of nano-silica ranges from 10 nm to 50 nm.

[0008] In some embodiments, the surface of the nano-silica particles is coated with a silane coupling agent layer.

[0009] In some embodiments, the shielding layer includes an inner shielding layer and an outer shielding layer; the inner shielding layer is a semi-conductive ethylene propylene rubber tape wrapped around the outside of the insulating layer; the outer shielding layer is an oxygen-free copper tape spirally wound around the outside of the inner shielding layer.

[0010] In some embodiments, the thickness of the oxygen-free copper strip ranges from 0.08 mm to 0.12 mm.

[0011] In some embodiments, the winding pitch of the oxygen-free copper strip is 3 to 5 times its width.

[0012] In some embodiments, the cable further includes a buffer layer disposed between the inner shielding layer and the outer shielding layer for absorbing vibration shock.

[0013] In some embodiments, the thickness of the buffer layer ranges from 0.5 mm to 1.0 mm.

[0014] In some embodiments, a grounding wire is connected to the outer shielding layer, and a quick-connect connector is attached to the end of the grounding wire.

[0015] In some embodiments, the thickness of the outer sheath ranges from 1.0 mm to 2.0 mm.

[0016] Compared with existing technologies, the weather-resistant and interference-resistant high-voltage cable provided by this invention introduces nano-silica into the modified polymer layer, forming a uniformly distributed inorganic skeleton structure within the modified polymer layer, which significantly improves the thermal stability and electrical insulation performance of the insulation layer. This structure can effectively suppress the thermal motion of polyethylene molecular chains, broaden the working temperature range of the insulation layer to -50℃ to 180℃, and increase its breakdown strength to over 30kV / mm, reducing the risk of high-temperature aging and leakage. Simultaneously, this modified material possesses good flexibility and processing stability, enabling the cable to maintain a stable structure and excellent insulation performance even under high temperature, strong vibration, and complex electromagnetic environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a weather-resistant and interference-resistant high-voltage cable provided in an embodiment of this utility model; Figure 2 This is a partial structural schematic diagram of an insulating layer provided in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 10. Conductor; 20. Insulating layer; 21. Modified polymer layer; 22. Silica layer; 221. Nano silica; 30. Shielding layer; 31. Inner shielding layer; 32. Outer shielding layer; 321. Grounding wire; 322. Quick-connect connector; 40. Buffer layer; 50. Outer sheath. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] To address the technical problems of insufficient temperature resistance and high risk of insulation layer failure in existing high-voltage cables, this invention provides a weather-resistant and interference-resistant high-voltage cable that can improve the temperature resistance and insulation performance of high-voltage cables.

[0021] It should be noted that the weather-resistant and interference-resistant high-voltage cable described in this utility model is used in, but not limited to, automotive cables. For ease of explanation, this utility model only uses the application of the weather-resistant and interference-resistant high-voltage cable in automotive cables as an example. The principle of the weather-resistant and interference-resistant high-voltage cable in other types of equipment is essentially the same as that in automotive cables, and will not be elaborated here.

[0022] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a weather-resistant and interference-resistant high-voltage cable provided in one embodiment of the present invention. Figure 2 This is a partial structural diagram of an insulation layer provided in an embodiment of the present invention. The cable includes a conductor 10, an insulation layer 20, a shielding layer 30, and an outer sheath 50 arranged sequentially from the inside to the outside.

[0023] The conductor 10, as the core component for power transmission, is preferably made of multiple strands of tin-plated soft copper wire. The tin plating layer effectively prevents the copper wire from oxidizing, improving the corrosion resistance and welding reliability of the conductor 10. The multi-strand stranded structure allows the conductor 10 to maintain high flexibility and fatigue resistance under bending and vibration conditions, thereby ensuring that the cable is less prone to strand breakage or increased resistance during long-term operation.

[0024] The insulating layer 20 tightly covers the outside of the conductor 10 to isolate the high-voltage electric field and prevent leakage. In this embodiment, the insulating layer 20 includes a modified polymer layer 21 and a silica layer 22. The modified polymer layer 21 is preferably made of modified cross-linked polyethylene material. In this embodiment, modified cross-linked polyethylene is used as an example. The silica layer 22 includes a plurality of uniformly distributed nano-silica 2211 particles. The silica layer 22 is embedded in the modified polymer layer 21. Preferably, the nano-silica 221 accounts for 2% to 5% of the total mass of the insulating layer 20. The nanoparticles can be uniformly distributed in the modified polymer layer 21 by a combination of mechanical mixing and chemical dispersion to form a microscale "inorganic framework structure".

[0025] On the one hand, the addition of nano-silica 221 inhibits the thermal motion of cross-linked polyethylene molecular chains, reduces the coefficient of thermal expansion of the material, and allows the insulation layer 20 to maintain a stable morphology under high temperature conditions, thereby expanding the working temperature range of the cable from the traditional 90℃ to over 180℃. On the other hand, silica particles can uniformly disperse charges and block the expansion of electrical tree channels under the action of an electric field, effectively improving the dielectric strength and breakdown voltage of the material, making the insulation breakdown strength reach over 30kV / mm, and significantly improving the insulation reliability of high-voltage cables.

[0026] The shielding layer 30 is disposed outside the insulation layer 20 to weaken the leaked electromagnetic field and prevent external interference from entering. The outer sheath 50 is the outermost protective structure of the cable, which can prevent damage to the internal structure from external mechanical impact, oil and ultraviolet rays, thereby improving the overall environmental adaptability and service life of the cable.

[0027] In this embodiment, by introducing nano-silica 221 into the modified polymer layer 21, the temperature resistance and insulation breakdown strength of the material are significantly improved, while maintaining good flexibility and processing stability. This enables the cable to adapt to the high temperature, strong vibration and complex electromagnetic environment of the high voltage system of new energy vehicles, and achieve stable and safe power transmission.

[0028] In some embodiments, the particle size range of nano-silica 221 is preferably set to 10 nm to 50 nm. Nanoparticles within this particle size range have both good dispersibility and reinforcing effect: when the particle size is less than 10 nm, the particle specific surface area is too large, the surface energy is significantly increased, and agglomeration is easy to occur, resulting in non-uniformity of the material interface, which weakens the overall dielectric uniformity of the insulating layer 20; when the particle size is greater than 50 nm, the particle size is close to the polymer molecular chain size, the filling effect is dominant, it is difficult to form a stable nano-interface layer, and the modification effect on the polyethylene matrix is ​​weakened.

[0029] In this embodiment, the particle size of nano-silica 221 is controlled within the range of 10 nm to 50 nm, enabling it to be fully dispersed and uniformly embedded in the modified cross-linked polyethylene matrix. The particles form a dense and continuous "inorganic support network" within the material. This network, on the one hand, restricts the thermal motion of the polyethylene molecular chains, improving the material's thermal deformation temperature and thermo-oxidative stability; on the other hand, the interfacial polarization effect between the nanoparticles and polyethylene effectively disperses electric field energy, weakens electric field concentration, and prevents the growth of electrical trees, thereby significantly improving the heat resistance and breakdown strength of the insulation layer 20. Furthermore, the appropriate nanoparticle size maintains the material's flexibility and processing fluidity, without significantly increasing the shear resistance of the extrusion process or affecting the uniformity of the cross-linking reaction, which is beneficial for achieving stable production under industrial conditions.

[0030] Furthermore, in some embodiments, the surface of the nano-silica 221 particles is coated with a silane coupling agent layer. Silane coupling agents are a class of interface modifiers containing hydrolyzable silane groups and organic reactive groups, and their main function in this embodiment is to improve the interfacial compatibility between inorganic particles and the organic polymer matrix.

[0031] Specifically, one end of the silane coupling agent molecule contains a -Si(OR)3 functional group that can react with the hydroxyl groups on the surface of silica, and can form a stable -Si-O-Si- bond on the particle surface through a condensation reaction, thereby constructing a dense organosilanes film on the outer layer of nano-silica 221; the other end has an organic active group (such as amino, epoxy or vinyl) that can bond or entangle with the functional groups or free radicals in the cross-linked polyethylene molecular chain to form a stable interface layer with chemical bonds or physical entanglement.

[0032] Through this surface coating structure, the relationship between the nano-silica 221 particles and the polyethylene matrix is ​​transformed from a "physical filling contact" to a "chemical coupling connection," significantly improving the interfacial bonding force and dispersion stability. The silane coupling layer can effectively suppress the agglomeration of nanoparticles during processing, ensuring their uniform distribution within the polymer matrix and thus avoiding the problem of electric field concentration caused by local dielectric inhomogeneities.

[0033] Furthermore, the coupling agent layer also imparts hydrophobic properties to the surface of the nanoparticles to a certain extent, reducing the material's hygroscopicity and polarity, and improving the tracking resistance, corona resistance, and long-term aging performance of the insulation layer 20. Through the above modifications, nano-silica 221 forms a stable "organic-inorganic composite network structure" with the polyethylene matrix, further enhancing the heat resistance, dielectric strength, and mechanical stability of the insulation layer 20.

[0034] In some embodiments, the shielding layer 30 includes an inner shielding layer 31 and an outer shielding layer 32, which are coaxially distributed and cooperate with each other to achieve the dual functions of electric field homogenization and efficient electromagnetic interference suppression.

[0035] The inner shielding layer 31 is constructed of semi-conductive ethylene propylene rubber tape, tightly wrapping around the outside of the insulation layer 20. Ethylene propylene rubber itself possesses excellent elasticity, heat resistance, and aging resistance, enabling it to adapt to the deformation requirements of the cable under alternating high and low temperatures, bending, and vibration conditions. The tape material is mixed with carbon black or conductive polymer components, giving it overall semi-conductive properties. This effectively regulates the potential gradient between the insulation layer 20 and the outer shielding layer 32 under high-voltage conditions, uniformly distributing the electric field intensity and preventing localized corona discharge on the surface of the insulation layer 20 due to air gap discharge. In the actual structure, the overlap rate of the inner shielding layer 31 is preferably not less than 20% to ensure dense and gapless coverage. This inner shielding layer 31 not only plays a role in electric field balancing but also provides buffering and support functions, offering a flexible transition interface for the outer structure.

[0036] The outer shielding layer 32 is disposed outside the inner shielding layer 31 and is formed by spirally winding oxygen-free copper strip. Oxygen-free copper has extremely high conductivity and excellent ductility, and its electromagnetic shielding performance is far superior to that of ordinary copper-clad aluminum braided structures. This outer shielding layer 32 reflects and absorbs high-frequency electromagnetic signals through the metallic copper strip, forming a dual shielding system of "semi-conductive absorption + metal reflection" in conjunction with the inner layer of semi-conductive ethylene propylene rubber. This can achieve an electromagnetic interference shielding efficiency of over 90dB in the 1MHz~1GHz frequency band, thereby effectively suppressing the interference of high-voltage signals inside the cable on sensitive electronic components such as vehicle radar and communication modules.

[0037] Furthermore, in one embodiment, the thickness of the oxygen-free copper strip is preferably in the range of 0.08 mm to 0.12 mm. When the copper strip thickness is less than 0.08 mm, its mechanical strength is significantly reduced, and it is prone to wrinkling, breakage, or delamination during wrapping or bending, resulting in increased local gaps in the shielding layer 30 and reduced overall electromagnetic shielding continuity. At the same time, an excessively thin copper strip is prone to metal fatigue under long-term vibration or temperature changes, leading to a decrease in the reliability of the shielding layer 30.

[0038] When the copper strip thickness is greater than 0.12mm, although the conductivity and anti-interference ability are slightly improved, the flexibility of the copper strip is significantly reduced. It is difficult to fit tightly with the lower layer when wrapping, which can easily cause problems such as increased bending radius, uneven processing tension and excessive overall cable stiffness, which is not conducive to the installation requirements of narrow wiring space in vehicles.

[0039] In this embodiment, the thickness of the oxygen-free copper strip is controlled between 0.08 mm and 0.12 mm, which achieves a balance between shielding effect and flexibility. The copper strip within this thickness range forms a dense and continuous metallic shielding layer 30 after spiral wrapping. This layer has strong reflection and absorption capabilities for high-frequency electromagnetic radiation while maintaining good mechanical compliance, adapting to cable deformation under bending, vibration, and temperature fluctuations, ensuring the long-term stability of the shielding layer 30 without cracking or peeling.

[0040] In one embodiment, the winding pitch of the oxygen-free copper tape is preferably set to 3 to 5 times its width. When the winding pitch is less than 3 times the width of the copper tape, the copper tape overlaps more during the wrapping process, and the metal layer stacking density is too high. Although the shielding coverage is close to 100%, it will significantly increase the overall weight and stiffness of the cable, which is not conducive to bending and assembly in the narrow wiring space of the vehicle. At the same time, the overly dense winding structure may cause uneven thermal expansion between the copper tapes, which is prone to wrinkles or peeling after long-term use.

[0041] Conversely, when the winding pitch is greater than 5 times the width of the copper strip, the gap between the copper strips increases significantly, the continuity of the shielding layer 30 decreases, and small electromagnetic leakage channels are prone to appear, reducing the shielding efficiency for high-frequency signals. Under the action of a strong electric field or high-frequency current, local electromagnetic leakage may interfere with surrounding vehicle electronic equipment, such as radar, controllers or communication modules, thereby affecting the electromagnetic compatibility performance of the entire vehicle.

[0042] In this embodiment, controlling the winding pitch of the oxygen-free copper tape within 3 to 5 times its bandwidth maintains a high shielding coverage (≥90%) while also ensuring flexibility and mechanical compliance. This allows the shielding layer 30 to remain tightly fitted to the inner structure without loosening or lifting under bending or vibration conditions. This pitch design also optimizes material utilization and winding speed, achieving a balance between shielding performance, structural reliability, and manufacturing process. Furthermore, by controlling the winding angle and tension of the copper tape, a continuous and uniform conductive path is formed in the overlap area between each turn of the copper tape. This effectively reduces contact resistance and enhances the overall integrity of the electromagnetic shielding, thereby ensuring the signal stability and anti-interference performance of the cable under high-voltage and high-frequency operating environments.

[0043] In some embodiments, the cable further includes a buffer layer 40, which is disposed between the inner shielding layer 31 and the outer shielding layer 32 to absorb vibration shocks and provide isolation protection. New energy vehicles generate continuous mechanical vibrations and instantaneous impact loads in the frequency range of 10Hz to 2000Hz during operation. If high-voltage cables lack an effective buffer structure, problems such as loosening of the shielding layer 30, fatigue fracture of the conductor 10, or peeling of the insulation layer 20 from the shielding layer 30 may easily occur after prolonged operation, affecting the overall reliability and safety of the cable.

[0044] In this embodiment, the buffer layer 40 can undergo reversible deformation during vibration and impact, absorbing and dispersing mechanical energy, thus acting as a "buffer pad". It can also disperse structural stress during cable bending, preventing slippage or cracking between multi-layer structures. Its high elasticity and heat resistance allow the cable to maintain stable mechanical properties over a wide temperature range of -40℃ to 150℃.

[0045] Furthermore, in one embodiment, the thickness of the buffer layer 40 is preferably in the range of 0.5 mm to 1.0 mm. The buffer layer 40 is preferably composed of a composite of elastic silicone rubber and glass fiber cloth. This composite structure has both high elasticity and high strength characteristics, and can play a role in stress buffering and vibration isolation protection in multilayer cable structures.

[0046] Controlling the thickness within the range of 0.5mm to 1.0mm ensures sufficient buffering and energy absorption capacity while preventing excessive cable outer diameter or reduced flexibility. When the thickness is less than 0.5mm, the energy absorption and vibration damping effect of silicone rubber is insufficient, making it difficult to effectively counteract high-frequency vibrations; when the thickness is greater than 1.0mm, the flexibility of the buffer layer 40 decreases and the bending radius increases, which is not conducive to cable laying in confined spaces.

[0047] As a reinforcing skeleton layer, fiberglass cloth has excellent tensile strength, dimensional stability and heat resistance. It can provide support during the winding of the outer shielding layer 32 and prevent the inner layer from being deformed or the insulation layer 20 from being damaged by the copper strip compression. At the same time, fiberglass is an electrical insulating material, which can effectively block the formation of electric field concentration areas and improve the overall insulation uniformity.

[0048] Elastic silicone rubber is uniformly coated or infiltrated into the interfiber gaps of the fiber cloth, forming a continuous elastic coating on its surface after curing. Silicone rubber has high elastic recovery performance and excellent high and low temperature resistance, maintaining flexibility and stability for a long time in environments ranging from -50℃ to 200℃. When the vehicle generates vibration impact or thermal expansion and contraction stress, the silicone rubber layer can undergo reversible deformation, absorbing and dispersing external mechanical energy, thereby reducing local stress concentration in the inner and outer shielding layers 32 and the insulating layer 20.

[0049] In this embodiment, the layer thickness is limited to the range of 0.5mm to 1.0mm, which can significantly improve the structural stability and service life of the cable under vibration, shock and temperature cycling conditions without significantly increasing the cable volume, and achieve synergistic protection of the insulation and shielding system.

[0050] In one embodiment, a grounding wire 321 is connected to the outer shielding layer 32, and a quick-connect connector 322 is provided at the end of the grounding wire 321 to achieve quick grounding and efficient installation of the shielding layer 30, thereby ensuring the electromagnetic compatibility and maintenance convenience of the cable in the vehicle system.

[0051] The grounding wire 321 is preferably made of tin-plated soft copper conductor 10, with a wire diameter ranging from 0.5 mm to 1.0 mm. The tin plating layer effectively prevents the copper conductor 10 from oxidizing in humid or high-temperature environments, improving the corrosion resistance and conductivity stability of the grounding wire 321. The grounding wire 321 is reliably connected to the oxygen-free copper strip of the outer shielding layer 32 by welding or crimping. The solder joint resistance is preferably controlled below 5 mΩ to ensure low-impedance continuity of the current path.

[0052] After the grounding wire 321 is wrapped in the outer shielding layer 32, one end is left out for easy connection to the vehicle's grounding system. The quick-connect connector 322 at its end can be a metal snap-fit ​​or crimp-fit ​​structure. The connector material is preferably nickel-plated copper or stainless steel to balance conductivity and mechanical strength. The quick-connect connector 322 is fixed to the grounding wire 321 via a crimping process, with the crimping force controlled between 10N and 20N to ensure a secure connection and maintain low contact resistance even after repeated insertions and removals.

[0053] In this embodiment, the quick-connect structure enables solderless installation of the shielding layer 30. During vehicle wiring harness installation or maintenance, no additional welding or winding is required; simply plugging in the connector ensures reliable grounding of the shielding layer 30, significantly reducing installation time and improving on-site assembly efficiency. Simultaneously, the plug-in connection avoids problems such as incomplete soldering or detachment caused by temperature rise or solder residue in traditional welding processes, enhancing the long-term stability and maintainability of the system.

[0054] In one embodiment, the outer sheath 50 preferably has a thickness ranging from 1.0 mm to 2.0 mm. As the outermost protective structure of the cable, the outer sheath 50 is mainly used to resist external mechanical impact, oil corrosion, ozone aging and ultraviolet radiation, and is an important component to ensure the long-term stable operation of the cable in complex vehicle environments.

[0055] The thickness of the outer sheath 50 is preferably between 1.0 mm and 2.0 mm. When the thickness is less than 1.0 mm, the sheath's wear resistance and impact resistance are insufficient, and it is prone to cracking under long-term bending or external force. When the thickness exceeds 2.0 mm, it will lead to an increase in cable weight and stiffness, which is not conducive to wiring in the narrow space of the vehicle body. Limiting the thickness to this range can ensure protective performance while maintaining good flexibility and ease of installation.

[0056] The outer sheath 50 is preferably made of oil-resistant and weather-resistant EPDM rubber with 3% to 6% magnesium hydroxide flame retardant. EPDM rubber is a highly saturated non-polar synthetic rubber with excellent heat resistance, ozone resistance, and aging resistance, maintaining its flexibility over a wide temperature range of -50℃ to 150℃. Its molecular chain structure contains appropriate amounts of ethylene and propylene units, giving the material both good weather resistance and mechanical toughness, making it highly suitable for high-voltage cable sheaths in new energy vehicle chassis, engine compartments, and other applications exposed to complex climatic and mechanical stress environments.

[0057] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A weather-resistant and interference-resistant high-voltage cable, comprising, from the inside out, a conductor, an insulation layer, a shielding layer, and an outer sheath, characterized in that, The insulating layer includes a modified polymer layer and a silicon dioxide layer. The silicon dioxide layer includes a plurality of uniformly distributed nano-silica particles. The silicon dioxide layer is embedded in the modified polymer layer to improve the temperature resistance and insulation performance.

2. The weather-resistant and interference-resistant high-voltage cable according to claim 1, characterized in that, The particle size range of the nano-silica is 10 nm to 50 nm.

3. The weather-resistant and interference-resistant high-voltage cable according to claim 1, characterized in that, The surface of the nano-silica particles is coated with a silane coupling agent layer.

4. The weather-resistant and interference-resistant high-voltage cable according to claim 1, characterized in that, The shielding layer includes an inner shielding layer and an outer shielding layer; The inner shielding layer is a semi-conductive ethylene propylene rubber tape that covers the outside of the insulating layer; The outer shielding layer is an oxygen-free copper strip, spirally wound around the outside of the inner shielding layer.

5. The weather-resistant and interference-resistant high-voltage cable according to claim 4, characterized in that, The thickness of the oxygen-free copper strip ranges from 0.08 mm to 0.12 mm.

6. The weather-resistant and interference-resistant high-voltage cable according to claim 4, characterized in that, The winding pitch of the oxygen-free copper strip is 3 to 5 times its width.

7. The weather-resistant and interference-resistant high-voltage cable according to claim 4, characterized in that, The cable also includes a buffer layer disposed between the inner shielding layer and the outer shielding layer for absorbing vibration and shock.

8. The weather-resistant and interference-resistant high-voltage cable according to claim 7, characterized in that, The thickness of the buffer layer ranges from 0.5 mm to 1.0 mm.

9. The weather-resistant and interference-resistant high-voltage cable according to claim 4, characterized in that, A grounding wire is connected to the outer shielding layer, and a quick-connect connector is attached to the end of the grounding wire.

10. The weather-resistant and interference-resistant high-voltage cable according to claim 1, characterized in that, The thickness of the outer sheath ranges from 1.0 mm to 2.0 mm.

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